diff options
| author |   Taekgyun Ko <taeggyun.ko@samsung.com> | 2010-07-29 13:00:42 +0900 |
|---|---|---|
| committer |   Kukjin Kim <kgene.kim@samsung.com> | 2010-08-05 18:32:51 +0900 |
| commit | 051fe54e9f8c568dc9cd288b630d436ee93afe35 (patch) | |
| tree | 43cba5cae8a90661f56ac4f8466cd9f7baca73fb /drivers/rtc/rtc-s3c.c | |
| parent | rtc: rtc-s3c: Updates driver for S3C64XX and newer SoCs (diff) | |
| download | linux-dev-051fe54e9f8c568dc9cd288b630d436ee93afe35.tar.xz linux-dev-051fe54e9f8c568dc9cd288b630d436ee93afe35.zip | |
rtc: rtc-s3c: Add BCD register initialization codes
RTC needs to be initialized when BCD registers have invalid value.
Signed-off-by: Taekgyun Ko <taeggyun.ko@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Diffstat (limited to 'drivers/rtc/rtc-s3c.c')
| -rw-r--r-- | drivers/rtc/rtc-s3c.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index 204001769ebc..a0d3ec89d412 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -458,6 +458,7 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) { struct rtc_device *rtc; struct resource *res; + unsigned int tmp, i; int ret; pr_debug("%s: probe=%p\n", __func__, pdev); @@ -536,6 +537,15 @@ static int __devinit s3c_rtc_probe(struct platform_device *pdev) s3c_rtc_cpu_type = platform_get_device_id(pdev)->driver_data; + /* Check RTC Time */ + + for (i = S3C2410_RTCSEC; i <= S3C2410_RTCYEAR; i += 0x4) { + tmp = readb(s3c_rtc_base + i); + + if ((tmp & 0xf) > 0x9 || ((tmp >> 4) & 0xf) > 0x9) + writeb(0, s3c_rtc_base + i); + } + if (s3c_rtc_cpu_type == TYPE_S3C64XX) rtc->max_user_freq = 32768; else |